Hunan Three-Ring Pigments Co., Ltd., established in October, 1965, has developed to a larger-scale manufacturer of Iron Oxide Pigment in China. The annual manufacturing capacity reaches 45,000 tons. Our company has established a pigment research institute with a group of senior professional team players. Aiming to constantly research and develop new products, our research institute is equipped with all kinds of well-performed testing and analyzing apparatuses and equipment. Our company has set up 4 manufacture factories, producing series of Iron Oxide Red, Iron Oxide Yellow, Iron Oxide Black,...